👉 In computer science, a "lightfast" object or value is one that can be updated in constant time (i.e., O(1)) without affecting its original state. This means that an object's value remains unchanged after being updated with new data. For example: ```python class LightFast: def __init__(self): self.value = 0 def set_value(self, value): self.value = value light = LightFast() light.set_value(1